diff options
| -rw-r--r-- | luaotfload-auxiliary.lua | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/luaotfload-auxiliary.lua b/luaotfload-auxiliary.lua index 844c170..5ed7bb9 100644 --- a/luaotfload-auxiliary.lua +++ b/luaotfload-auxiliary.lua @@ -36,6 +36,68 @@ local stringbyte = string.byte ----------------------------------------------------------------------- --[[doc-- + +The font object (tfmdata) structure has changed since version 1.x, so +in case other packages haven’t been updated we put fallbacks in place +where they’d expect them. Specifically we have in mind: + + · fontspec + · unicode-math + · microtype (most likely fixed till TL2013) + +--doc]]-- + +--- fontobj -> fontobj +local add_fontdata_fallbacks = function (fontdata) + if type(fontdata) == "table" then + local fontparameters = fontdata.parameters + local metadata + if not fontdata.shared then --- that would be a tfm + --- we can’t really catch everything that + --- goes wrong; for some reason, fontspec.lua + --- just assumes it always gets an otf object, + --- so its capheight callback, which does not + --- bother to do any checks, will access + --- fontdata.shared no matter what ... + fontdata.units = fontdata.units_per_em + else --- otf + metadata = fontdata.shared.rawdata.metadata + fontdata.units = fontparameters.units + local resources = fontdata.resources + fontdata.size = fontparameters.size + --- for legacy fontspec.lua and unicode-math.lua + fontdata.shared.otfdata = metadata + fontdata.shared.otfdata.metadata = metadata --- brr, that’s meta indeed + --- for microtype.lua + fontdata.shared.otfdata.luatex = { + unicodes = resources.unicodes, + features = resources.features, + } + end + end + return fontdata +end + +luatexbase.add_to_callback( + "luaotfload.patch_font", + add_fontdata_fallbacks, + "luaotfload.fontdata_fallbacks") + +--[[doc-- + +Additionally, the font registry is expected at fonts.identifiers, but +in the meantime it has been migrated to fonts.hashes.identifiers. +We’ll make luaotfload satisfy those assumptions. (Maybe it’d be more +appropriate to use font.getfont() since Hans made it a harmless wrapper +[1].) + +[1] http://www.ntg.nl/pipermail/ntg-context/2013/072166.html + +--doc]]-- + +fonts.identifiers = fonts.hashes.identifiers + +--[[doc-- This sets two dimensions apparently relied upon by the unicode-math package. --doc]]-- |